What is a sofa?

A sofa is a large, upholstered piece of furniture designed for seating multiple people, commonly found in living rooms, lounges, and offices. Sofas typically have a backrest and armrests and are often cushioned for comfort. They come in various styles, sizes, and materials to suit different preferences and interior designs. Besides providing seating, sofas can also sometimes serve as beds or storage units, depending on their design.